#ifndef SRC_REQ_WRAP_H_
#define SRC_REQ_WRAP_H_

#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS

#include "async-wrap.h"
#include "env.h"
#include "util.h"
#include "v8.h"

namespace node {

template <typename T>
class ReqWrap : public AsyncWrap {
public:
    inline ReqWrap(Environment* env,
        v8::Local<v8::Object> object,
        AsyncWrap::ProviderType provider);
    inline ~ReqWrap() override;
    inline void Dispatched(); // Call this after the req has been dispatched.
    T* req() { return &req_; }

private:
    friend class Environment;
    ListNode<ReqWrap> req_wrap_queue_;

protected:
    // req_wrap_queue_ needs to be at a fixed offset from the start of the class
    // because it is used by ContainerOf to calculate the address of the embedding
    // ReqWrap. ContainerOf compiles down to simple, fixed pointer arithmetic.
    // sizeof(req_) depends on the type of T, so req_wrap_queue_ would
    // no longer be at a fixed offset if it came after req_.
    T req_;
};

} // namespace node

#endif // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS

#endif // SRC_REQ_WRAP_H_
